MQSeries.net :: View topic - Websphere running on Unix, problem with HL7 Acknowledgments

jrsetters · Posted: Tue Sep 27, 2011 10:51 am Post subject:

Situation:

We have created an HL7 message flow using TCPIP. Part of the standard requires that HL7 packets over TCPIP be framed with leading and trailing bytes called MLLP (0B and 1C 0D respectively). Our flow creates an acknowledgment message, framed in these MLLP bytes and returns them to our Unix sender (called eGate).

When executing the workflow on a Windows platform, we are able to successfully receive the incoming message and send back an acknowledgment to eGate with the appropriate framing. However when we deploy to our Webshpere test environment, which also runs on Unix, it can receive the eGate messages, parse them and send an Acknowledgment but eGate returns an error message that the MLLP trailing bytes are missing (1C 0D). When I collect the outgoing message in a log queue, the MLLP bytes are visible:

00000 0B 4D 53 48 7C 5E 7E 5C--26 7C 65 73 62 2E 52 65 |MSH|^~\&|esb.Re|
00010 63 65 69 76 65 72 7C 20--7C 20 7C 20 7C 32 30 31 |ceiver| | | |201|
00020 31 30 39 32 37 30 30 36--32 31 35 37 7C 7C 41 43 |109270062157||AC|
00030 4B 7C 31 31 65 30 61 37--66 37 30 30 30 30 30 30 |K|11e0a7f7000000|
00040 30 30 30 30 30 30 7C 50--7C 32 2E 32 0D 4D 53 41 |000000|P|2.2
MSA|
00050 7C 41 41 7C 31 32 33 34--35 36 37 38 39 7C 20 0D ||AA|123456789|
|
00060 1C 0D -- |
|

As can be seen, the proper framing bytes exist in the message. Has anyone run into this sort of issue before? The exact same message can be received and processed by eGate when sent from our windows development environment, but not from the Unix test system.

Thanks!